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Question

Why am I getting an error for sending SMS to a T-Mobile number?

  • Aug 10, 2025 11:07 PM UTC
  • 4 replies
  • 84 views

This SMS by Zapier step hit an error

Halted Exception: Numbers from T-Mobile are not supported. See https://help.zapier.com/hc/en-us/articles/24178576809613/ for more information.

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4 replies

  • Author
  • New
  • Aug 11, 2025 5:16 PM UTC

SMS being sent to AT&T number not T mobile


Troy Tessalone
Zapier Orchestrator & Solution Partner
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  • Zapier Orchestrator & Solution Partner
  • Aug 11, 2025 5:17 PM UTC

Hi ​@aeolus 

Help links for using SMS by Zapier to review: https://zapier.com/apps/sms/integrations#help


  • Author
  • New
  • Aug 11, 2025 6:44 PM UTC

I'm reporting what appears to me as a bug since this used to work but doesn't anymore. I'm not sending to a T- mobile number. Referring me to a general guide on how to use SMS is not very helpful.


Troy Tessalone
Zapier Orchestrator & Solution Partner
Forum|alt.badge.img+14
  • Zapier Orchestrator & Solution Partner
  • Aug 11, 2025 6:54 PM UTC

​@aeolus 

You would need to open a ticket with Zapier Support: https://zapier.com/app/get-help